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#ifndef CRYPTOPP_TWOFISH_H
#define CRYPTOPP_TWOFISH_H
/** \file
*/
#include "seckey.h"
#include "secblock.h"
NAMESPACE_BEGIN(CryptoPP)
struct Twofish_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 0, 32>, FixedRounds<16>
{
static const char *StaticAlgorithmName() {return "Twofish";}
};
/// <a href="http://www.weidai.com/scan-mirror/cs.html#Twofish">Twofish</a>
class Twofish : public Twofish_Info, public BlockCipherDocumentation
{
class Base : public BlockCipherBaseTemplate<Twofish_Info>
{
public:
void UncheckedSetKey(CipherDir direction, const byte *userKey, unsigned int length);
protected:
static word32 h0(word32 x, const word32 *key, unsigned int kLen);
static word32 h(word32 x, const word32 *key, unsigned int kLen);
static const byte q[2][256];
static const word32 mds[4][256];
FixedSizeSecBlock<word32, 40> m_k;
FixedSizeSecBlock<word32[256], 4> m_s;
};
class Enc : public Base
{
public:
void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
};
class Dec : public Base
{
public:
void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
};
public:
typedef BlockCipherTemplate<ENCRYPTION, Enc> Encryption;
typedef BlockCipherTemplate<DECRYPTION, Dec> Decryption;
};
typedef Twofish::Encryption TwofishEncryption;
typedef Twofish::Decryption TwofishDecryption;
NAMESPACE_END
#endif
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